G. Raidl, H. Feltl:
"An improved hybrid genetic algorithm for the generalized assignment problem.";
in: "Proceedings of the 2003 ACM Symposium on Applied Computing", H. M. Haddad et al. (ed.); ACM, 2004, ISBN: 1-58113-812-1, 990 - 995.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04968672